Read the following statement as per IS 800: 2007, Which one of the following combinations of statements is correct?
Statement A: Rolled I-section \({h\over b_f}>1.2 \) and tf ≤ 40 mm buckling about the z-z axis is an 'a' type buckling class.
Statement B: The effective throat thickness of the fillet weld is K times the size of the weld, for 112∘ angle between fusion faces K is 0.5.
Statement C: In the case of lap joints, the minimum lap should not be less than six times the thickness of the thinner part joined or 60 mm whichever is more.
Statement D: The imperfection factor (α) for buckling class 'b' is 0.34.
1
(A)-True, (B)-True, (C)-False, (D)-False
2
(A)-False, (B)-True, (C)-False, (D)-True
3
(A)-True, (B)-False, (C)-False, (D)-True
4
(A)-False, (B)-False, (C)-True, (D)-True